well, due mainly to improvements in technology, high gas and auto prices and shifting attitudes. >>> on nbcnews.com, it's the great hexagon. storm pictures shine in saturn pictures. the orbiter capturing these amazing images of an unusual jet stream on saturn's north pole. any ideas? >> if i knew, i'd be rich. >> you also might be on that planet. >>> stories we're watching today, breaking overnieght, a suicide car bomber attacks yemen's defense ministry. the blast was followed by a fire fight with gunmen who tried to take over the complex. as many as 12 of them have been killed. >>> here at home, a massive mission. specialists are desperately trying to save dozens of beached whales in florida's everglades park. >>> "the washington post" reports the nsa is tracking the location of as many as 5 billion cell phones each day. this according to documents leaked by former nsa contractor edward snowden. >>> and in case you missed it, it's official now. the holiday season with the rockefeller center christmas tree, bam. aglow right outside our building here. the 76-foot norway spruce is cove